Supplemental boiler for locomotives.



E. 0. SHAW. SUPPLEMENTAL BOILER FOR LOCOMOTIVES.

APPLICATION FILED JUNE 29, 1912.

Patented Mar. 25, 1913.

WITNESSES VENTOR (5W /4aw Q% Allarne COLUMBIA PLANOGRAPH co.,WASHINGTON, n. c,

EDWIN G. SHAW, OF WILMINGTON, DELAWARE.

SUPPLEMENTAL BOILER FOR LOCOMOTIVES.

Specification of Letters Patent.

Patented Mar. 25, 1913.

Application filed June 29, 1912. Serial No. 706,574.

To all whom it may concern Be it known that I, EDWIN C. SHAW, citizen ofthe United States, residing at Wilmington, in the county of Newcastleand State of Delaware, have invented certain new and useful Improvementsin Supplemental Boilers for Locomotives and other Engines, of which thefollowing is a specification.

My invention has relation to improve ments in supplemental boilers forlocomotive and other engines, and the object of the invention is toprovide a locomotive or other engine with a supplemental or preheatingboiler which will be located in the fire-box a little above the fuelgrate, said supplemental boiler having a longitudinal centrally formedopening through which air is admitted from the outside into the fireboxabove the grate bars to promote combustion.

With these and other objects in view the invention consists in the novelconstruction and combination of parts as will be hereinafter more indetail described and the asserted novelty specifically pointed out inthe claim.

I have fully and clearly illustrated my invention in the accompanyingdrawings in which;

Figure 1 is a longitudinal side elevation of a locomotive boiler partlybroken away. Fig. 2 is a cross sectional view of my supplemental boileras applied in this example to a locomotive boiler.

Similar letters of reference indicate similar parts throughout bothviews.

Referring to the drawings: A designates a locomotive boiler providedwith the usual fire-box B, grate-bars C and fire-tubes D connected withthe fire box, all of which are of the well known construction and whichform no part of my invention, and hence further description of the sameis not deemed herein necessary.

I The improvement consists of a cylinder E open at both ends andsurrounded by a jacket F forming a water space G connected by an inletpipe H with the water space I of a locomotive or other boiler. Thejacketed cylinder is also connected by a pipe J with the water space I,said pipe having a valve K.

The device is fitted within an opening in the boiler front L and issupported above the grate-bars of the fire-box.

The utility of the improvement is that water entering the space Gthrough the pipe H is heated and with the steam is dis charged into thepipe J and thence into the boiler, thus the water after it is circulatedin the locomotive boiler supplies water to the supplemental boilerthrough the medium of the pipe H, above stated.

The open ends of the cylinder E provide an air space M through which airpasses to the coal in the fire-box to promote combustion thereof. A

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

The combination with a locomotive boiler, fire-box, grate-bars andfire-tubes located within the boiler; of a jacketed supplemental boilerhaving an air space formed centrally therethrough, and inlet and outletpipes, the outlet pipe having a valve connected thereto, all constructedand operated substantially as described and for the purposes set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

EDWIN C. SHAW.

Witnesses:

CHARLES GREEN, EDWARD ABRAHAMS.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

